Drugs of abuse - alcohol Flashcards
samples that can be analyzed for alcohol
blood urine vitreous humor cerebrospinal fluid bile breath
screening device vs evidentiary device to test for alcohol
screening - portable, uses batteries, road side, has alert or fail
evidentary - not portable, will give a number
if the alcotest 7410 reads 0.030 BAC that =
30mg%
if alcotest displays A that =
50-99mg%
if alcotest displays F that =
100mg% or greater
consumption =
absorption + elimination
how is alcohol absorbed
30% from stomach
70% from SI
rate of alcohol absorption affected by
food in stomach - delays concentration of alcohol - higher concentration more irritating to stomach speed of consumption drugs disease emotional state
where is alcohol distributed
from SI and stomach goes to liver then heart then to the brain and body
what is the widmark hypothesis
alcohol is distributed in the body in proportion to the water content of the tissues
r = concentration of body alcohol/concentration of blood alcohol
BAC attained depends on
body size
body fat - alcohol doesnt distribute into fat so more stays in blood
gender - women have higher fat content
absorption formula
ml of liquor 40%v/v = BACmg% x weight kg x 0.022
*females x 6/7
metabolism of alcohol
mostly in liver
alcohol to acetaldehyde to acetate to co2 +h2o
excretion
small amount eliminated unchanged via breath, urine, feces, sweat, tears, saliva
elimination =
ml of liquour 40%v/v = weight/70 x 25 x hrs since first drink
